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Oval|Lab Grown|IGI

1.86ct F IF Oval Lab Grown Diamond

EX • F/IF • IGI LG777620400

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG777620400

Diamond specifications and retailer prices

From £222 GBP
$297 USD
As of October 29, 2026
Save £2,234 GBP (91%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,455 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.86ct lab-grown oval diamond

This 1.86ct lab-grown oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG777620400 or 777620400. Listed at 15 retailers as of October 26, 2026, with prices from £222 to £2,455, a £2,234 spread on the same certified stone. Brilliant Earth lists it at £2,455. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG777620400
Dimensions9.88 × 6.93 × 4.26 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.88 mm6.93 mm1.86 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG777620400
Side View
Table 61.0%Crown 33.6°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 61.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £2,455 GBP|Low: £222 GBP|High: £2,560 GBP|Avg: £826 GBP|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 11£222 GBP
Retailer 4£276 GBP
Retailer 2£429 GBP
Retailer 9£451 GBP
Retailer 7£479 GBP
Retailer 12£523 GBP
Retailer 8£640 GBP
Retailer 5£845 GBP
Retailer 10£884 GBP
Retailer 6£1,108 GBP
Retailer 3£1,978 GBP
Brilliant Earth£2,455 GBP

34 data points across 12 retailers

15 retailers£222 GBP to £2,455 GBP

A
Cheapest Retailer
-
£222 GBP
$297 USD
Retailer 2
-
£246 GBP
$330 USD
View
Price last confirmed 39 days ago
A
Retailer 3
-
£276 GBP
$370 USD
View
Final sale: no returns
Retailer 4
-
£286 GBP
$383 USD
View
Price last confirmed 36 days ago
A
Retailer 5
-
£429 GBP
$575 USD
View
A
Retailer 6
-
£451 GBP
$604 USD
View
A
Retailer 7
-
£479 GBP
$642 USD
View
Retailer 8
-
£523 GBP
€668 EUR
View
Price last confirmed 9 days ago
A
Retailer 9
-
£640 GBP
A$1,319 AUD
View
A
Retailer 10
-
£845 GBP
$1,132 USD
View
A
Retailer 11
-
£884 GBP
$1,185 USD
View
Retailer 12
-
£981 GBP
$1,315 USD
View
Price last confirmed 36 days ago
B+
Retailer 13
-
£1,108 GBP
View
Retailer 14
-
£1,978 GBP
$2,650 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
18034378A · Oct 26
£2,455 GBP
$3,290 USD
View
14 more retailers have this diamond
Prices start from £222 GBPSave up to £2,234 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.86ct Oval
£222 GBP